Window guard and screen



July 21, 1942. 1 E. H. L UNKEN 2,290,808

WINDQWG'UARD AND SCREEN Filed July 21, 1941 2 Sheets-Sheet 1 I INVENTOR, 1o W ATTORNEY.

July 21, 1942. LUNKEN 2,290,808

WINDOWGUARD AND SCREEN Filed July 21, 1941 2 Sheets-Sheet 2 INVENTOR.

ATTORN EV.

Patented July 21, 1942 UNITED STATES PATENT OFFICE.

WENDOW GUARD AND SCREEN Edmund H. Lunken, Springfield Township, Hamilton County, "Ohio Application July 21, 1941, Serial No. 403,259

11 Claims.

This invention relates to improvements in a combined grille, insect screen, and air filter for the protection of window and the like openings.

An'object-of the invention is to provide a grille for a window or like opening of simple and durable'structure, readilya pplicable to the conventional window opening fram'ing on the eXterior side of the sash, and hingedly mounted preferably at its upper end, adapting the same to be swung outwardly for access to the sash to cleanse the glass panes thereof. V 7

Another object is to provide a grille as a protection means for a window -or like opening, hing-edly and slidably mounted to the opening and framing, the sliding action permitting the grille to be unlocked for removal or outward swing. a

Another object is to fasten the grille to the sash to lock loot-h sash and grille. I

Another object is to provide a window or like opening with a protecting grille arranged for convenient application of a mesh, woven, or cheesecloth material, to serve for excluding insects, and asan air filter, and which can be readily removed for laundering or replacement. a a

Various other features and advantages of the invention will be more fully apparent from a description of the accompanying drawings, in

which: a

Figure l is an elevation of a window frame. as viewed "from the exterior side thereof, fitted with the improved grille, the grille equipped with woven cloth fabric serving as an air filter and insect screen.

Figure 2 is an enlarged sectional view taken on line 2- 2, Figure 1, further illustrating the grille structure.

Figure 3 is a cross section of the same, taken on line 33,Figure 1. M a v Figure 4 is a. fragmentaryvievv of the lower portion of the grille as viewed from the interior side thereof, further illustrating the grille structure and the arrangement for attachment of the cloth fabric. a

Figure 5 is an enlarged fragmentary cross section, further detailing the cross rails and theattaching means for the upper and lower ends of the gauze.

Figure 6 is a sectional view taken on line 66, Figure 2, detailing the lock screw which serves to lock the upper sash and grille.

Figure '7 is an exterior elevation of a window frame similar to Figure 1, showing a modified form of grille adapted for removably mounting a wire screen fabric. a

Figure 8 is an enlarged longitudinal sectional view taken on line 8--8, Figure '7, further illustrating the modified structure.

Figure 9 is a sectional view Figure '7.

taken on line 9-9,

an upper sash 2 and lower sash 3.

Figure 10 is an enlarged fragmentary sectional View similar to Figure 9, detailing the retaining strip utilized for closing "the opposite side edges of the screenand maintaining the screen in position against the cross bars of the grille.

Figure 11 is an enlarged fragmentary view i1- lustrating the mounting arrangement for the opopsite ends of the wire screen fabric.

epening, located adjacent the outer side of the "sash, and comprises a pair of corresponding side rails 5, '5, of a length corresponding approximately to the full height of the window opening or frame into which the grille is fitted, except for a tolerance allowed for a slight vertical sliding motion to uh'latch the grille from its locking con- 'nection with the sill of thewindow frame.

The side or -end rails '5, 5, areof channel form in section, with their channel side inward or relatively opposing each other. Each at its upper end centrally of the channel has an elongated or key slot *6 therethrough for the reception of a screw 1 securedin the window frame, and allows sufiicient play for the Side railsor grille frame to slide vertically. p v g The lower end and intermediate portion of the side rails are connected by a top cross rail 8 and a bottom cross rail 9, with their opposite ends welded or otherwise permanently secured to the side rails, and preferably within the channel thereof. The top and bottom cross rails 8 and 9 are preferably of channel form in cross section, withthe channel open laterally and toward the sash, each for the reception of an anchoring bar or rod It to which respectively an end of a screen cloth is enveloped or secured.

The upper limb or flange ll of the top cross rail 8 is of extended form to contact or engage abuttingly with the outer side of the lower cross rail l2 of theupper sash frame 2. A plurality or series of grid bars or rods l3, relative preferably in uniform spacing apart, are interposed between the top and bottom rails and in parallelism therewith,havi ng their opposite ends welded or otherwise permanently secured to the side rails 5,5, and Within the channel of each thereof. The 'channeliorm of side and cross rails, as a frame for the grille and the grid bars when welded together, form a very rigid and substantial structure as a protective barrier for the window openmg. a V

The lower ends of the side rails 5 at opposite sides are engaged by a pair of clips l4, [4, fixed to the sill of the window frame, normally looking the grille against lateral movement or displacement. To release the grille, it is necessary to lift or slide the same vertically to a degree sufficient to free the same from the jaws or upstanding lugs of the clips. The grille is locked against an unlatching movement by a screw bolt l5 mounted within a tubular casing l6 secured to and extending through a side rail I! of the upper sash 2.

The screw bolt is adapted to be advanced into a threaded lug l8, weldedor otherwise secured to a relative side rail of the grille, thereby locking both the grille and sash against any sliding action. The screw bolt is located in an intermediate position for the length of the window sash, and necessitates that the upper sash be in its fully closed position to bring the lock bolt into registration with the threaded aperture in the lug. The lock bolt is also preferably located at a point out of access from the outside, so that it cannot be maliciously unlocked when the lower sash is in a full opened position.

The upper and lower cross rails 8 and 9 of the grille have their channels open to the side respectively for the reception of relative opposite end edges of either a metallic or cloth screen fabric or gauze l9. In the use of a woven cloth fabric, of a class designated commercially as a mosquito bar or cheesecloth, each of the opposite ends of the fabric is hemmed to envelope an anchoring strip or rod l0, which is seated into the channel of a cross rail, securing the fabric to the grille frame.

The intermediate portion of the fabric is laced in a zigzag form over relative alternate sides of the grid bars to sufficiently secure or span the same against wind pressure in either inner or outer directions, protecting and sustaining the screen material in a vertical position Without being tightly stretched as is customary in conventional screen construction. The opposite selvaged or lapped longitudinal edges of the fabric can be efficiently tucked into the channels of the vertical side rails of the grille to guard against the passage of insects.

The employment of a cloth fabric screen for the grille provides an eflicient protection against insects, and the nature of the fabric will filter the air passing therethrough, collecting any dust or like contaminants conveyed therewith, and the fabric can be readily removed for laundering or replacement.

The cloth fabric lends itself admirably to be variously fashioned to supply as drapery in addition to its service as an insect screen or air filter. The material is available in various colors, so that during the warm or hot weather periods when the windows are opened, the usual decorative inside draperies can be eliminated.

For a more permanent and durable screening, metallic wire mesh fabric can be employed, with the opposite upper and lower edges of the fabric secured to suitable metal binding strips to be slipped and held in the channels of the cross rails 8 and 9 of the grille so as to be interchangeable With the cheesecloth screen if desired.

In Figures 7 to 11 inclusive, a preferred mode and structure of metal screen inserts as a substitute for or interchangeable with the cloth fabric screen is illustrated, comprising a metal screen fabric 2| having its opposite ends each respectively crimped within a binding rail 22 of channel form. The screen fabric is clamped within the binding rail by a beading or clamp rod 23, pressed into the channel of the binding rail betwen the folds of the edge margin of the fabric as shown in detail Figure 11.

The binding or anchoring rail 22, with the screen fabric clamped therein similarly as described for securing the cloth screen, is inserted into the channel of a cross rail 8 or 9 of the grille, the binding rails for the opposite ends of the metal screen being of duplicate construction. The binding rail is clamped within the cross rail by a plurality of thumb or set-screws 24, threaded and traversing a flange of the cross rail preferably at the upper side thereof, and may also serve to tighten or tautly stretch the metal screen. The thumb or set-screws also serve to clamp the anchoring strip employed within the hem or fold of the cloth screen.

The bottom binding rail 22 is provided with a pair of handles 25 fixed to the outer flange thereof and exposed or accessible from the inner side serving for raising the grille to unlatch the same. Handles can also be attached directly to the lower end of the vertical side rails if desired.

The opposite side edges of the metal screen fabric terminate along the edges of the vertical side rails of the grille, and are overlapped by suitable molding strips 26 applied or secured within the channels of the side rails, thereby facilitating the application of the wire screen and avoiding tucking for engaging the same within the channel.

The molding or margin strips 26 are preferably formed of sheet material in a reverse fold, in cross section, as a spring clip, with the limbs thereof of relatively different length, and adapted to be engaged between the inner side of the outer flange of the side rails and the margin of the screen fabric. The screen fabric bears against the inner side of the grid bars by the pressure exerted by the strips. The strips being formed preferably of resilient spring material are readily applied by pressing or driving them in place for frictional engagement with the channel and screen fabric, serving to close the gap betwen the channel and the edge of the fabric, and serving also to keep the screen edges in position within the channel and against the grid bars. When the screen is to be removed, the strips are readily pried loose by means of a screw driver or similar tool. If desired, the strips may be of solid form, such as wood or rubber, and may be similarly applied to the cloth fabric screen.

As shown in Figure 2, the grille is provided with a brace 21 comprising a pair of links pivotally connected together, the links having their opposite ends pivotally connected to the window frame and side rail respectively. When the grille is swung outwardly, for example to wash the windows, the brace locks in an extended dead-center position to sustain the grille in overhanging position for convenient access to the outside of the window.

Having described my invention, I claim:

1. A combined window guard and screen, comprising: a pair of side rails for the height of the opening framing, each at its upper end hingedly fixed to the upper end of the window framing, cross rails of channel form as upper and lower, each at its opposite ends fixed to the side rails, grid bars in relative spacing interposed between said top and bottom cross rails and at their opposite ends respectively fixed to said side rail, a screen fabric having relative opposite end margins respectively recessed into the channel of said cross rails, and an anchoring strip for each cross rail binding the recessed margin of the fabric within the cross rail, the fabric having its side margins overlying relative edges of the side rails.

2. A combined window guard and screen, comprising: a pair of side rails for the height of the opening framing, each at its upper end hingedly fixed to the upper end of the window framing, cross rails of channel form as upper and lower, each at its opposite ends fixed to the side rails, grid bars in relative spacing interposed between sad top and bottom cross rail and at their opposite ends respectively fixed to said side rail, a screen fabric having relative opposite end margins respectively recessed into the channel of said cross rails, an anchoring strip for each cross rail binding the recessed margin of the fabric within the cross rail, the fabric having its side margins engaged within the channel of the side rails, and means for locking the grille to a window sash.

3. A combined window guard and screen, com= prising: a guard frame of side rails joined by a plurality of relatively spaced transverse grid bars,

a pair of cross rails of channel form connecting said side rails, one thereof as a frame, the channels of the cross rails open to a longitudinal edge of the side rails, and the cross rails separated to define a definite window area, a screen of cloth material having its opposite ends provided with a reinforcing strip for removably mounting an end of the screen cloth within the channels of said cross rails to secure the same to the guard frame, and the screen fabric laced through the spacing of the grid bars and extended on relative alternate sides thereof.

4. A combined window guard and screen, comprising: a guard frame of side rails joined by transverse grid bars, a pair of cross rails of channel form connecting said side rails, one thereof as the base of the guard frame, a screen of cloth material having its opposite ends respectively provided with an anchoring strip for removably mounting within the channels of said cross rails to secure the same to the guard frame.

5. A combined window guard and screen, comprising: a guard frame of channel side rails joined by transverse grid bars, a pair of cross rails of channel form connecting said side rails, one thereof as a base of the guard frame, said cross rails separated to define a definite window area, a screen of cloth material having opposite ends mounted within the channels of said cross rails, and a body portion thereof laced through the spacing of the grid bars and over the grid bars alternately at relative opposite sides thereof.

6. A combined window guard and screen, comprising: a pair of channel side rails, channel cross rails connecting the said rails with the channels thereof having a sidewise exposure, a plurality of relatively spaced grid bars connecting said side rails intermediate of said cross rails, and a screen of cloth material having its opposite longitudinal ends removably secured within the channels of said cross rails, the body portion thereof interlaced through the spacing between the grid bars to engage about opposite sides of the bars alternately, and the side margins of the cloth tucked into the channels of the side rails.

'7. A combined window guard and screen, comprising: a frame structure of a pair of channel side rails, channel cross rails connecting the side base for the guard rails with the channels thereof having a side wise exposure, a plurality of relatively spaced grid bars connecting said side rails intermediate of said cross rails, and a screen fabric having its opposite longitudinal ends removably mounted within the channels of said cross rails.

8. A combined window guard and screen, comprising: a pair of channel side rails, channel cross rails connecting the side rails with the channels thereof having a sidewise exposure, a plurality of relatively spaced grid bars connecting said side rails intermediate of said cross rails, and a screen fabric having a binding strip at each of its opposite longitudinal ends for removably mounting the same within the channels of said cross rails, and means carried by the cross rails for securing the binding strip with the channels of the cross rails.

9. A combined window guard and screen, comprising: a frame structure of a pair of channel side rails, channel cross rails connecting the side rails with the channels thereof having a sidewise exposure, a plurality of relatively spaced grid barsconnecting said side rails intermediate of said cross rails, said side rails being adapted to be hingedly and slidably mounted at the upper end to the window frame, in combination with latching means mounted upon the sill of the window framing, engaging with the lower cross rails of the frame structure to secure the frame structure against lateral displacement, and releasing therefrom by a slight elevation of the frame structure.

10. A combined window guard and screen, comprising: a frame structure of a pair of channel side rails, channel cross rails connecting the side rails with the channels thereof having a sidewise exposure, a plurality of relatively spaced grid bars connecting said side rails intermediate of said cross rails, said side rails being adapted to be hingedly and slidably mounted at the upper end to the window frame, a screen fabric having a binding rail respectively at each of relative opposite ends thereof adapted to be interposed in the channel of said cross rails, in combination with latching means mounted upon the sill of the window framing, engaging with the lower cross rails of the frame structure to secure the frame structure against lateral displacement, and releasing therefrom by a slight elevation of the frame structure, and means for locking the frame structure to a sash slidable in said window frame for securing said frame and sash against sliding movement.

11. A combined window guard and screen, comprising: a pair of channel side rails, channel cross rails connecting the side rails with the channels thereof having a sidewise exposure, a plurality of relatively spaced grid bars connecting said side rails intermediate of said cross rails, and a screen fabric having a binding strip at each of its opposite longitudinal ends for removably mounting the same within the channels of said cross rails, means carried by the cross rails for securing the binding strip within the channels of the cross rails, and a strip engaged in the channel of a side rail and having a marginal portion overlapping a relative longitudinal edge of said screen fabric between the cross rails.

EDMUND H. LUNKEN. 

